package demo.jfreechart.example4;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

import javax.swing.*;

/**
 * 项目名称：test<br/>
 * *********************************<br/>
 * <p>类名称：LineCharts</p>
 * *********************************<br/>
 * <p>类描述：</p>
 * 创建人：zhouzhihui<br/>
 * 创建时间：2017/3/24 18:08<br/>
 * 修改人：周志辉<br/>
 * 修改时间：2017/3/24 18:08<br/>
 * 修改备注：<br/>
 *
 * @version 1.0<br/>
 */
public class LineCharts extends ApplicationFrame {

    private static final long serialVersionUID = 1L;

    public LineCharts(String s) {
        super(s);
        setContentPane(createDemoLine());
    }

    public static void main(String[] args) {
        LineCharts fjc = new LineCharts("折线图");
        fjc.pack();
        RefineryUtilities.centerFrameOnScreen(fjc);
        fjc.setVisible(true);
    }

// 生成显示图表的面板
    public static JPanel createDemoLine() {
        JFreeChart jfreechart = createChart(createDataset());
        return new ChartPanel(jfreechart);
    }

// 生成图表主对象JFreeChart
    public static JFreeChart createChart(DefaultCategoryDataset linedataset) {
        // 定义图表对象
        JFreeChart chart = ChartFactory.createLineChart("一季度销售曲线", //折线图名称
                "时间", // 横坐标名称
                "销售额(百万)", // 纵坐标名称
                linedataset, // 数据
                PlotOrientation.VERTICAL, // 水平显示图像
                true, // include legend
                true, // tooltips
                false // urls
        );

        CategoryPlot plot = chart.getCategoryPlot();
        plot.setRangeGridlinesVisible(true); //是否显示格子线
        plot.setBackgroundAlpha(0.3f); //设置背景透明度
        NumberAxis rangeAxis = (NumberAxis)plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        rangeAxis.setAutoRangeIncludesZero(true);
        rangeAxis.setUpperMargin(0.20);
        rangeAxis.setLabelAngle(Math.PI / 2.0);
        return chart;
    }

// 生成数据

    public static DefaultCategoryDataset createDataset() {
        DefaultCategoryDataset linedataset = new DefaultCategoryDataset();
        // 各曲线名称
        String series1 = "冰箱";
        String series2 = "彩电";
        String series3 = "洗衣机";
        // 横轴名称(列名称)
        String type1 = "1月";
        String type2 = "2月";
        String type3 = "3月";
        linedataset.addValue(0.0, series1, type1);
        linedataset.addValue(4.2, series1, type2);
        linedataset.addValue(3.9, series1, type3);
        linedataset.addValue(1.0, series2, type1);
        linedataset.addValue(5.2, series2, type2);
        linedataset.addValue(7.9, series2, type3);
        linedataset.addValue(2.0, series3, type1);
        linedataset.addValue(9.2, series3, type2);
        linedataset.addValue(8.9, series3, type3);
        return linedataset;
    }
}